<?php  
class Phpzip extends Think {        
	private $ctrl_dir = array();        
	private $datasec  = array();
	       
	 /**********************************************************         
	  * 压缩部分         
	  * **********************************************************/        
	// ------------------------------------------------------ //        
	// #遍历指定文件夹 
	//        
	// $archive  = new PHPZip();        
	// $filelist = $archive->visitFile(文件夹路径);        
	// print "当前文件夹的文件:<p>\r\n";        
	// foreach($filelist as $file)        
	// printf("%s<br>\r\n", $file);        
	// ------------------------------------------------------ //        
	var $fileList = array();       
	public function visitFile($path)        
	{            
		global $fileList;            
		$path = str_replace("\\", "/", $path);            
		$fdir = dir($path);                    
		while(($file = $fdir->read()) !== false)            
		{                
			if($file == '.' || $file == '..'){ continue; }                        
			$pathSub    = preg_replace("*/{2,}*", "/", $path."/".$file);  // 替换多个反斜杠                
			$fileList[] = is_dir($pathSub) ? $pathSub."/" : $pathSub;                
			if(is_dir($pathSub)){ $this->visitFile($pathSub); } }            
			$fdir->close();            
			return $fileList;        
	}
	                       
	private function unix2DosTime($unixtime = 0)        
	{            
		$timearray = ($unixtime == 0) ? getdate() : getdate($unixtime);                
		if($timearray['year'] < 1980)            
		{                
			$timearray['year']    = 1980;                
			$timearray['mon']     = 1;                
			$timearray['mday']    = 1;                
			$timearray['hours']   = 0;                
			$timearray['minutes'] = 0;                
			$timearray['seconds'] = 0;
		}                
		return (
			($timearray['year'] - 1980) << 25)                    
			| ($timearray['mon'] << 21)                    
			| ($timearray['mday'] << 16)                    
			| ($timearray['hours'] << 11)                   
			| ($timearray['minutes'] << 5)                   
			| ($timearray['seconds'] >> 1);        
	}        
			 	                  
	   var $old_offset = 0;        
	   private function addFile($data, $filename, $time = 0)        
	   {            
		     $filename = str_replace('\\', '/', $filename);                
		     $dtime    = dechex($this->unix2DosTime($time));            
		     $hexdtime = '\x' . $dtime[6] . $dtime[7]  
		     . '\x' . $dtime[4] . $dtime[5]. '\x' 
		     . $dtime[2] . $dtime[3]. '\x' 
		     . $dtime[0] . $dtime[1]; 
		                
		     eval('$hexdtime = "' . $hexdtime . '";');  
		                   
		     $fr       = "\x50\x4b\x03\x04";            
		     $fr      .= "\x14\x00";            
		     $fr      .= "\x00\x00";            
		     $fr      .= "\x08\x00";            
		     $fr      .= $hexdtime;            
		     $unc_len  = strlen($data);            
		     $crc      = crc32($data);            
		     $zdata    = gzcompress($data);            
		     $c_len    = strlen($zdata);            
		     $zdata    = substr(substr($zdata, 0, strlen($zdata) - 4), 2);            
		     $fr      .= pack('V', $crc);            
		     $fr      .= pack('V', $c_len);            
		     $fr      .= pack('V', $unc_len);            
		     $fr      .= pack('v', strlen($filename));            
		     $fr      .= pack('v', 0);            
		     $fr      .= $filename;                
		     $fr      .= $zdata;                
		     $fr      .= pack('V', $crc);            
		     $fr      .= pack('V', $c_len);            
		     $fr      .= pack('V', $unc_len);                
		     $this->datasec[] = $fr;            
		     $new_offset      = strlen(implode('', $this->datasec));                
		     $cdrec  = "\x50\x4b\x01\x02";            
		     $cdrec .= "\x00\x00";            
		     $cdrec .= "\x14\x00";            
		     $cdrec .= "\x00\x00";           
		     $cdrec .= "\x08\x00";            
		     $cdrec .= $hexdtime;            
		     $cdrec .= pack('V', $crc);           
		     $cdrec .= pack('V', $c_len);            
		     $cdrec .= pack('V', $unc_len);           
		     $cdrec .= pack('v', strlen($filename) );            
		     $cdrec .= pack('v', 0 );            
		     $cdrec .= pack('v', 0 );            
		     $cdrec .= pack('v', 0 );            
		     $cdrec .= pack('v', 0 );            
		     $cdrec .= pack('V', 32 );                
		     $cdrec .= pack('V', $this->old_offset );            
		     $this->old_offset = $new_offset;                
		     $cdrec .= $filename;
		                 
		     $this->ctrl_dir[] = $cdrec;        
	 }   
			 	                            
	var $eof_ctrl_dir = "\x50\x4b\x05\x06\x00\x00\x00\x00";  	 	       
	private function file(){            
		$data    = implode('', $this->datasec); 
		$ctrldir = implode('', $this->ctrl_dir);
		return   $data . $ctrldir. $this->eof_ctrl_dir
			.pack('v', sizeof($this->ctrl_dir))
			.pack('v', sizeof($this->ctrl_dir))
			.pack('V', strlen($ctrldir)) 
			.pack('V', strlen($data)). "\x00\x00";
	}                    
			
	// ------------------------------------------------------ //        
	// #压缩到服务器        //        
	// $archive = new PHPZip();       
	// $archive->Zip("需压缩的文件所在目录", "ZIP压缩文件名");         
	// ------------------------------------------------------ //        
	 public function Zip($dir, $saveName)        
	 {
		 if(@!function_exists('gzcompress'))
		 { 
		 	ECHO 'fuck';exit;
		 	return; 
		 }
		 
		 ob_end_clean();
		 $filelist = $this->visitFile($dir);
		 if(count($filelist) == 0)
		 { return; }
		 
		 foreach($filelist as $file)
		 {
			 if(!file_exists($file) || !is_file($file)){ continue; } 
			 $fd       = fopen($file, "rb");                
			 $content  = @fread($fd, filesize($file)); 
			 fclose($fd);                
			 // 1.删除$dir的字符(./folder/file.txt删除./folder/)               
			  // 2.如果存在/就删除(/file.txt删除/)  
			  $file = substr($file, strlen($dir));                
			  if(substr($file, 0, 1) == "\\" || substr($file, 0, 1) == "/"){ $file = substr($file, 1); }                                
			  $this->addFile($content, $file);            
			 }            
			 $out = $this->file();                
			 $fp = fopen($saveName, "wb");            
			 fwrite($fp, $out, strlen($out));            
			 fclose($fp);
	 }                
			 
	 // ------------------------------------------------------ //        
	 // #压缩并直接下载        //        
	 // $archive = new PHPZip();        
	 // $archive->ZipAndDownload("需压缩的文件所在目录");       
	 // ------------------------------------------------------ //       
	   public function ZipAndDownload($dir)
	   {            
		   if(@!function_exists('gzcompress'))
		   { 
		   		return; 
		   }                
		   ob_end_clean();  
		             
		   $filelist = $this->visitFile($dir); 
		              
		   if(count($filelist) == 0)
		   { return; } 
		                  
		   foreach($filelist as $file) 
		   {                
			   if(!file_exists($file) || !is_file($file)){ continue; } 
			   $fd       = fopen($file, "rb");                
			   $content  = @fread($fd, filesize($file));                
			   fclose($fd); 
			                      
			   // 1.删除$dir的字符(./folder/file.txt删除./folder/)               
			   // 2.如果存在/就删除(/file.txt删除/)                
			   $file = substr($file, strlen($dir));                
			   if(substr($file, 0, 1) == "\\" || substr($file, 0, 1) == "/")
			   { 
		   	   	$file = substr($file, 1); }                                
				$this->addFile($content, $file); 
			   }            
				$out = $this->file(); 
				@header('Content-Encoding: none');            
				@header('Content-Type: application/zip');            
				@header('Content-Disposition: attachment ; filename=Farticle'.date("YmdHis", time()).'.zip');            
				@header('Pragma: no-cache');            
				@header('Expires: 0');            
				print($out);        
	   }                                               
	   	    
    /*********************************************************** 解压部分 **********************************************************/        
    // ------------------------------------------------------ //        
    // ReadCentralDir($zip, $zipfile)        
    // $zip是经过@fopen($zipfile, 'rb')打开的        
    // $zipfile是zip文件的路径        
    // ------------------------------------------------------ //        
	private function ReadCentralDir($zip, $zipfile)        
	{
		$size     = filesize($zipfile);            
		$max_size = ($size < 277) ? $size : 277;                        
		@fseek($zip, $size - $max_size);            
		$pos   = ftell($zip);            
		$bytes = 0x00000000;                 
		while($pos < $size){                
			$byte  = @fread($zip, 1);                
			$bytes = ($bytes << 8) | Ord($byte);                
			$pos++;                
			if($bytes == 0x504b0506){ break; }            
		}                        
		$data = unpack('vdisk/vdisk_start/vdisk_entries/ventries/Vsize/Voffset/vcomment_size', 
		fread($zip, 18));            
		$centd['comment']      = ($data['comment_size'] != 0) ? fread($zip, $data['comment_size']) : '';  // 注释            
		$centd['entries']      = $data['entries'];            
		$centd['disk_entries'] = $data['disk_entries'];            
		$centd['offset']       = $data['offset'];            
		$centd['disk_start']   = $data['disk_start'];            
		$centd['size']         = $data['size'];            
		$centd['disk']         = $data['disk'];            
		return $centd;        
	} 

   
   private function ReadCentralFileHeaders($zip)       
   {
	    $binary_data = fread($zip, 46);            
	    $header      = unpack('vchkid/vid/vversion/vversion_extracted/vflag/vcompression/vmtime/vmdate/Vcrc/Vcompressed_size/Vsize/vfilename_len/vextra_len/vcomment_len/vdisk/vinternal/Vexternal/Voffset', $binary_data); 
	    $header['filename'] = ($header['filename_len'] != 0) ? fread($zip, $header['filename_len']) : '';            
	    $header['extra']    = ($header['extra_len']    != 0) ? fread($zip, $header['extra_len'])    : '';            
	    $header['comment']  = ($header['comment_len']  != 0) ? fread($zip, $header['comment_len'])  : '';                
	    
	    if($header['mdate'] && $header['mtime'])            
	    {                
		    $hour    = ($header['mtime']  & 0xF800) >> 11;                
		    $minute  = ($header['mtime']  & 0x07E0) >> 5;                
		    $seconde = ($header['mtime']  & 0x001F) * 2;                
		    $year    = (($header['mdate'] & 0xFE00) >> 9) + 1980;                
		    $month   = ($header['mdate']  & 0x01E0) >> 5;                
		    $day     = $header['mdate']   & 0x001F;                
		    $header['mtime'] = mktime($hour, $minute, $seconde, $month, $day, $year);            
	    } else {                
	    $header['mtime'] = time();            }            
	    $header['stored_filename'] = $header['filename'];            
	    $header['status'] = 'ok'; 
	               
	    if(substr($header['filename'], -1) == '/'){ 
	    	$header['external'] = 0x41FF0010; 
	    }  // 判断是否文件夹 
	    return $header;        
    }                
			   			 		
	private function ReadFileHeader($zip)        
	{            
		$binary_data = fread($zip, 30);            
		$data        = unpack('vchk/vid/vversion/vflag/vcompression/vmtime/vmdate/Vcrc/Vcompressed_size/Vsize/vfilename_len/vextra_len', $binary_data);                
		$header['filename']        = fread($zip, $data['filename_len']);            
		$header['extra']           = ($data['extra_len'] != 0) ? fread($zip, $data['extra_len']) : '';            
		$header['compression']     = $data['compression'];            
		$header['size']            = $data['size'];            
		$header['compressed_size'] = $data['compressed_size'];            
		$header['crc']             = $data['crc'];            
		$header['flag']            = $data['flag'];            
		$header['mdate']           = $data['mdate'];            
		$header['mtime']           = $data['mtime'];      
		          
		if($header['mdate'] && $header['mtime']){                
			$hour    = ($header['mtime']  & 0xF800) >> 11;                
			$minute  = ($header['mtime']  & 0x07E0) >> 5;                
			$seconde = ($header['mtime']  & 0x001F) * 2;                
			$year    = (($header['mdate'] & 0xFE00) >> 9) + 1980;                
			$month   = ($header['mdate']  & 0x01E0) >> 5;                
			$day     = $header['mdate']   & 0x001F;                
			$header['mtime'] = mktime($hour, $minute, $seconde, $month, $day, $year);            
		}else{                
			$header['mtime'] = time();            
		}                
		$header['stored_filename'] = $header['filename'];            
		$header['status']          = "ok";            
		return $header;        
	}                
		

	private function ExtractFile($header, $to, $zip)        
	{            
		$header = $this->readfileheader($zip);                        
		if(substr($to, -1) != "/"){ $to .= "/"; }            
		if(!@is_dir($to)){ @mkdir($to, 0777); }                        
		$pth = explode("/", dirname($header['filename']));            
		for($i=0; isset($pth[$i]); $i++){                
			if(!$pth[$i]){ continue; }                
			$pthss .= $pth[$i]."/";                
			if(!is_dir($to.$pthss)){ @mkdir($to.$pthss, 0777); }            
		}
		                        
		if(!($header['external'] == 0x41FF0010) && !($header['external'] == 16))            
		{                
			if($header['compression'] == 0)                
			{                    
			$fp = @fopen($to.$header['filename'], 'wb');                    
			if(!$fp){ return(-1); }                    
			$size = $header['compressed_size'];                                        
			while($size != 0)                    
			{                        
				$read_size   = ($size < 2048 ? $size : 2048);                        
				$buffer      = fread($zip, $read_size);                        
				$binary_data = pack('a'.$read_size, $buffer);                        
				@fwrite($fp, $binary_data, $read_size);                        
				$size       -= $read_size;                    
			}                    
			
				fclose($fp);                    
				touch($to.$header['filename'], $header['mtime']);                                
			}else{                                        
				$fp = @fopen($to.$header['filename'].'.gz', 'wb');                    
				if(!$fp)
				{ 
					return(-1); 
				}
				                    
				$binary_data = pack('va1a1Va1a1', 0x8b1f, Chr($header['compression']), Chr(0x00), time(), Chr(0x00), Chr(3));                                        
				fwrite($fp, $binary_data, 10);                    
				$size = $header['compressed_size'];                                        
				while($size != 0)                    
				{                        
					$read_size   = ($size < 1024 ? $size : 1024);                        
					$buffer      = fread($zip, $read_size);                        
					$binary_data = pack('a'.$read_size, $buffer);                        
					@fwrite($fp, $binary_data, $read_size);                        
					$size       -= $read_size;                    
				}                                        
				$binary_data = pack('VV', $header['crc'], $header['size']);                    
				fwrite($fp, $binary_data, 8);                    
				fclose($fp);                                        
				$gzp = @gzopen($to.$header['filename'].'.gz', 'rb') or die("Cette archive est compress!");                                        
				if(!$gzp){ return(-2); }                    
					$fp = @fopen($to.$header['filename'], 'wb');                    
				if(!$fp)
				{ 
					return(-1); 
				}                    
				
				$size = $header['size'];                                        
				while($size != 0)                   
				 {                        
				 	$read_size   = ($size < 2048 ? $size : 2048);                        
				 	$buffer      = gzread($gzp, $read_size);                        
				 	$binary_data = pack('a'.$read_size, $buffer);                        
				 	@fwrite($fp, $binary_data, $read_size);                        
				 	$size       -= $read_size;                    
				 }                    
			 	fclose($fp); gzclose($gzp);                                        
			 	touch($to.$header['filename'], $header['mtime']);                    
			 	@unlink($to.$header['filename'].'.gz');                
			}            
		}
		            
		return true;        
	} 
	
		// ------------------------------------------------------ //        
		// #解压文件        //        
		// $archive   = new PHPZip();        
		// $zipfile   = "ZIP压缩文件名";        
		// $savepath  = "解压缩目录名";        
		// $zipfile   = $unzipfile;        
		// $savepath  = $unziptarget;        
		// $array     = $archive->GetZipInnerFilesInfo($zipfile);        
		// $filecount = 0;        
		// $dircount  = 0;        
		// $failfiles = array();        
		// set_time_limit(0);  
		// 修改为不限制超时时间(默认为30秒)        
		//        
		// for($i=0; $i<count($array); $i++) {        
		//     if($array[$i][folder] == 0){        
		//         if($archive->unZip($zipfile, $savepath, $i) > 0){        
		//             $filecount++;        
		//         }else{       
		//             $failfiles[] = $array[$i][filename];       
		//         }       
		//     }else{        
		//         $dircount++;        
		//     }       
		// }        
		// set_time_limit(30);        
		//printf("文件夹:%d&nbsp;&nbsp;&nbsp;&nbsp;解压文件:%d&nbsp;&nbsp;&nbsp;&nbsp;失败:%d<br>\r\n", $dircount, $filecount, count($failfiles));        
		//if(count($failfiles) > 0){        
		//    foreach($failfiles as $file){        
		//        printf("&middot;%s<br>\r\n", $file);        
		//    }        
		//}        
		    // ------------------------------------------------------ //  
		          
		    public function unZip($zipfile, $to, $index = Array(-1))        
		    {            
		    	$ok  = 0;            
		    	$zip = @fopen($zipfile, 'rb');            
		    	if(!$zip){ return(-1); }                        
		    	$cdir      = $this->ReadCentralDir($zip, $zipfile);            
		    	$pos_entry = $cdir['offset'];                        
		    	if(!is_array($index)){ $index = array($index); }            
		    	for($i=0; $index[$i]; $i++)            
		    	{                
		    		if(intval($index[$i]) != $index[$i] || $index[$i] > $cdir['entries'])                
		    		{                    
		    			return(-1);                
		    		}           
		    	}                        
		    	for($i=0; $i<$cdir['entries']; $i++)            
		    	{                
		    		@fseek($zip, $pos_entry);                
		    		$header          = $this->ReadCentralFileHeaders($zip);                
		    		$header['index'] = $i;                
		    		$pos_entry       = ftell($zip);                
		    		@rewind($zip);                
		    		fseek($zip, $header['offset']);                
		    		if(in_array("-1", $index) || in_array($i, $index))                
		    		{                    
		    			$stat[$header['filename']] = $this->ExtractFile($header, $to, $zip);                
		    		}            
		    	}                        
		    	fclose($zip);            
		    	return $stat;        
		    }                                               
		     
		     /**********************************************************         * 其它部分         **********************************************************/        
		    // ------------------------------------------------------ //       
		     // #获取被压缩文件的信息        //        
		     // $archive = new PHPZip();        
		     // $array = $archive->GetZipInnerFilesInfo(ZIP压缩文件名);        
		     // for($i=0; $i<count($array); $i++) {        
		     //     printf("<b>&middot;%s</b><br>\r\n", $array[$i][filename]);       
		      //     foreach($array[$i] as $key => $value)        
		      //         printf("%s => %s<br>\r\n", $key, $value);        
		      //     print "\r\n<p>------------------------------------<p>\r\n\r\n";        
		      // }        
		      // ------------------------------------------------------ //        
		      public function GetZipInnerFilesInfo($zipfile)        
		      {            
			      	$zip = @fopen($zipfile, 'rb');            
			      	if(!$zip){ return(0); }            
			      	$centd = $this->ReadCentralDir($zip, $zipfile);                        
			      	@rewind($zip);            
			      	@fseek($zip, $centd['offset']);            
			      	$ret = array();            
			      	for($i=0; $i<$centd['entries']; $i++)            
			      	{                
			      		$header          = $this->ReadCentralFileHeaders($zip);                
			      		$header['index'] = $i;                
			      		$info = array(                    
			      		'filename'        => $header['filename'], // 文件名                    
			      		'stored_filename' => $header['stored_filename'],            // 压缩后文件名                   
			      		'size'            => $header['size'],                       // 大小                    
			      		'compressed_size' => $header['compressed_size'],            // 压缩后大小                    
			      		'crc'             => strtoupper(dechex($header['crc'])),    // CRC32                    
			      		'mtime'           => date("Y-m-d H:i:s",$header['mtime']),  // 文件修改时间                   
			      		'comment'         => $header['comment'],                    // 注释                    
			      		'folder'          => ($header['external'] == 0x41FF0010 || $header['external'] == 16) ? 1 : 0,  // 是否为文件夹                    
			      		'index'           => $header['index'],                      // 文件索引                    
			      		'status'          => $header['status']                      // 状态               
			      		 );                
			      		 $ret[] = $info;                
			      		 unset($header);            
			      	}
			      	fclose($zip);            
			      	return $ret;        
		      } 
		                             
      // ------------------------------------------------------ //        
      // #获取压缩文件的注释        //       
      // $archive = new PHPZip();        
      // echo $archive->GetZipComment(ZIP压缩文件名);        
      // ------------------------------------------------------ //        
      public function GetZipComment($zipfile)        
      {            
	      $zip = @fopen($zipfile, 'rb');            
	      if(!$zip){ return(0); }            
	      $centd = $this->ReadCentralDir($zip, $zipfile);            
	      fclose($zip);            
	      return $centd[comment];        
      }    
}
?>